Consulta: subjectFacets:"Polysaccharides"
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Data/hora: 02/06/2024 00:57:14

Procesos fisiológicos y contenido de polisacáridos estructurales en nopalito (Opuntia spp.) y su modificación por el potencial de agua del suelo
Provedor de dados: 32
Autores: García Ruiz, Mayra Teresa.
Se evaluaron los cambios de acidez titulable a lo largo de 24 h, de las yemas vegetativas con longitud media de 0.5 cm y nopalitos de 6 y 11 cm, de Opuntia ficus-indica de los cultivares Atlixco, Copena V1, Milpa Alta, Moradaza y Solferino, con riego. También se evaluó el efecto de la disminución del potencial de agua (ΨA) del suelo, por suspensión del riego durante 60 días, en condiciones de invernadero, en el potencial osmótico (ΨS ), liberación de electrolitos (o índice de daño membranal, Id) y contenido de polisacáridos estructurales de los nopalitos de esos cinco cultivares y una recolecta silvestre de O. streptacantha. La acidez de las yemas vegetativas y los nopalitos fluctuó entre 0.2 y 0.9 % a lo largo de las 24 horas del día, con las...
Tipo: Tesis
Palavras-chave: Acidez titulable; Potencial hídrico; Potencial osmótico; Polisacáridos; Maestría; Fisiología Vegetal; Tritable acidity; Water potential; Osmotic potential; Polysaccharides.
Ano: 2007
URL: http://hdl.handle.net/10521/1654

Isolation of high-quality RNA from Platycladus orientalis and other Cupressaceae plants
Provedor de dados: 69
Autores: Chang,Ermei; Zhao,Yuxin; Wei,Qianchun; Shi,Shengqing; Jiang,Zeping.
Platycladus orientalis has a lifespan of several thousand years in China, making it a good plant in which to study aging at the molecular level, but this requires sufficient quantities of high-quality P. orientalis RNA. However, no appropriate methods have been reported for total RNA isolation from P. orientalis leaves. The TRIzol method did not extract RNA, while cetyltrimethylammonium bromide, sodium dodecyl sulfate-phenol, and plant RNAout kit (Tianz, Inc., China) protocols resulted in low yields of poor quality RNA. Isolating total RNA using the Spectrum™ Plant Total RNA Kit (Sigma-Aldrich, St. Louis, MO, USA) resulted in a high-quality product but a low yield. However, the two-step removal of polyphenols and polysaccharides in the improved plant...
Tipo: Journal article
Palavras-chave: Cupressaceae plants; Polysaccharides; Polyphenols; Total RNA isolation; Two-step removal of polyphenols and polysaccharides.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582016000500004

Isolation of total RNA from tissues rich in polyphenols and polysaccharides of mangrove plants
Provedor de dados: 69
Autores: Rubio-Piña,Jorge A; Zapata-Pérez,Omar.
RNA extraction from mangrove tissues can be difficult due to the presence of polyphenolic and polysaccharide compounds upon cell disruption. Besides, a successful RNA isolation from mangrove tissues sometimes can be strain and species specific. Two different methods were used to extract RNA from tissues (stems, leaves and roots) of black mangrove (Avicennia germinans) and white mangrove (Laguncularia racemosa), collected from the mangrove area at Progreso, Yucatan, Mexico. An optimized and modified total RNA isolation method was developed for these recalcitrant species. The protocol is based on the CTAB method including &amp;#946;-mercaptoethanol and PVPP with sequential Phenol/Chloroform/isoamyl alcohol extractions to remove protein, and polyphenols,...
Tipo: Journal article
Palavras-chave: Mangrove; Plant tissues; Polysaccharides; RNA isolation.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000500011

Etude de la réponse immunitaire chez l'huître Crassostrea gigas : caractérisation et fonctions de protéines de reconnaissance aux LPS et d'effecteurs antimicrobiens
Provedor de dados: 5
Autores: Gonzalez, Marcelo.
Research on the immune response of oysters is motivated by the problems of infectious diseases potentially found in the farms. Over the course of the last few years, the development of genomic approaches has allowed us to make headway on characterising genes involved in the cup oyster's (Crassostrea gigas) innate immunity, particularly thanks to various programmes for analysing transcriptome, of type EST (Express Sequence Tag) and subtractive banks. Within the context of this work, over the course of which we have used the data from genomic research and we have also developed biochemical approaches, we were particularly interested in studying the proteins involved in reconnaissance reactions to LPS as well as to antimicrobial effectors. In an earlier part,...
Tipo: Text
Palavras-chave: Defense peptides; Polysaccharides; LPS; Hemocytes; Immune response; Crassostrea gigas; Shellfish culture; LPS; Défensine; Peptides antimicrobiens; LBP; BPI; Superoxide dismutase; Hémocytes; Crassostrea gigas; Huître; Mollusque; Immunité.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/these-2098.pdf

Sterilization of Exopolysaccharides Produced by Deep-Sea Bacteria: Impact on Their Stability and Degradation
Provedor de dados: 5
Autores: Rederstorff, Emilie; Fatimi, Ahmed; Sinquin, Corinne; Ratiskol, Jacqueline; Merceron, Christophe; Vinatier, Claire; Weiss, Pierre; Colliec-jouault, Sylvia.
Polysaccharides are highly heat-sensitive macromolecules, so high temperature treatments are greatly destructive and cause considerable damage, such as a great decrease in both viscosity and molecular weight of the polymer. The technical feasibility of the production of exopolysaccharides by deep-sea bacteria Vibrio diabolicus and Alteromonas infernus was previously demonstrated using a bioproduct manufacturing process. The objective of this study was to determine which sterilization method, other than heat sterilization, was the most appropriate for these marine exopolysaccharides and was in accordance with bioprocess engineering requirements. Chemical sterilization using low-temperature ethylene oxide and a mixture of ionized gases (plasmas) was compared...
Tipo: Text
Palavras-chave: Marine biotechnology; Polysaccharides; Sterilization procedures; Characterization; Molecular weight distribution; Rheology.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00027/13776/10913.pdf

Pharmacological Modulation of Human Mesenchymal Stem Cell Chondrogenesis by a Chemically Oversulfated Polysaccharide of Marine Origin: Potential Application to Cartilage Regenerative Medicine
Provedor de dados: 5
Autores: Merceron, Christophe; Portron, Sophie; Vignes-colombeix, Caroline; Rederstorff, Emilie; Masson, Martial; Lesoeur, Julie; Sourice, Sophie; Sinquin, Corinne; Colliec-jouault, Sylvia; Weiss, Pierre; Vinatier, Claire; Guicheux, Jerome.
Mesenchymal stem cells (MSCs) are considered as an attractive source of cells for cartilage engineering due to their availability and capacity for expansion and multipotency. Differentiation of MSC into chondrocytes is crucial to successful cartilage regeneration and can be induced by various biological agents, including polysaccharides that participate in many biological processes through interactions with growth factors. Here, we hypothesize that growth factor-induced differentiation of MSC can be increased by chemically oversulfated marine polysaccharides. To test our hypothesis, human adipose tissue-derived MSCs (hATSCs) were cultured in pellets with transforming growth factor (TGF)-beta 1-supplemented chondrogenic medium containing either the...
Tipo: Text
Palavras-chave: Cartilage; Adipose-derived mesenchymal stem cells; Polysaccharides; Transforming growth factor-beta.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00071/18227/17457.pdf

Etude de la biosynthèse des polysaccharides bactériens : vers la production recombinante d'hétéropolysaccharide
Provedor de dados: 5
Autores: Lebellenger, Lou.
The marine bacteria Vibrio diabolicus produces an exopolysaccharide (EPS) called HE800. The native form of HE800 has already shown biological efficiency in bone healing. It is studied as glycosaminoglycan-mimetic for applications in cosmetic and human health. To enhance biotechnological applications of polysaccharides, the chemical structures should be properly controlled; moreover, the production yield could also be a bottleneck. The genetic cluster of the HE800 EPS biosynthesis has been identified in 2014. However, the biosynthesis molecular mechanisms and regulations remain sometimes unclear. The main objective of this work is to obtain a recombinant production of the HE800 EPS in the common host Escherichia coli, to improve the knowledge of its...
Tipo: Text
Palavras-chave: Vibrio diabolicus; Polysaccharides; HE800; GAGmimétiques; Biosynthèse; Vibrio diabolicus; Polysaccharides; HE800; GAGmimetics; Biosynthesis.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00497/60911/64261.pdf

Capillary electrophoresis determination of the binding affinity of bioactive sulfated polysaccharides to proteins: study of the binding properties of fucoidan to antithrombin
Provedor de dados: 5
Autores: Varenne, A; Gareil, P; Colliec-jouault, Sylvia; Daniel, R.
The interaction of proteins with polysaccharides represents a major and challenging topic in glycobiology, since such complexes mediate fundamental biological mechanisms. An affinity capillary electrophoresis method has been developed to evidence the complex formation and to determine the binding properties between an anticoagulant polysaccharide of marine origin, fucoidan, and a potential target protein, antithrombin. This method is a variant of zonal electrophoresis in the mobility shift format. A fixed amount of protein was injected into a capillary filled with a background electrolyte containing the polysaccharide in varying concentrations. The effective mobility data of the protein were processed according to classical linearization treatments to...
Tipo: Text
Palavras-chave: Antithrombin; Fucoidan; Electrophoresis; Protein interaction; Polysaccharides.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/publication-2114.pdf

Silanisation de polysaccharides en milieu liquide ionique et réactivité d’un organoalkoxysilane vis-à-vis de nucléophiles simples : vers des hydrogels injectables pour l’ingénierie tissulaire du cartilage
Provedor de dados: 5
Autores: Guillory, Xavier.
Tissue engineering is a real challenge for the treatment of cartilage pathologies. In this field, biomimetic hydrogels based on natural polymers are among the most commonly used matrices. A hydrogel made of silanized hydroxypropylmethylcellulose (HPMC-Si) is especially promising because it can be injected in cartilaginous lesions by minimally invasive surgery. However, the current synthesis of HPMC-Si is limited by the insolubility of hydroxypropylmethylcellulose (HPMC). This thesis work was focused on finding new synthesis conditions for the design of HPMC-Si hydrogel. In order to obtain a complete solubilization of HPMC and to improve its functionalization by the (3-glycidyloxypropyl) trimethoxysilane (GPTMS), the use of ionic liquids (IL), which are...
Tipo: Text
Palavras-chave: Silanisation; Biopolymères; Polysaccharides; Liquides ioniques; Chimie sol-gel; Ingénierie tissulaire; Hydrogels.; Silanization; Biopolymers; Polysaccharides; Ionic liquids; Sol-gel chemistry; Tissue engineering; Hydrogels.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00341/45188/44585.pdf

Unusual Glycosaminoglycans from a Deep Sea Hydrothermal Bacterium Improve Fibrillar Collagen Structuring and Fibroblast Activities in Engineered Connective Tissues
Provedor de dados: 5
Autores: Senni, Karim; Gueniche, Farida; Changotade, Sylvie; Septier, Dominique; Sinquin, Corinne; Ratiskol, Jacqueline; Lutomski, Didier; Godeau, Gaston; Guezennec, Jean; Colliec-jouault, Sylvia.
Biopolymers produced by marine organisms can offer useful tools for regenerative medicine. Particularly, HE800 exopolysaccharide (HE800 EPS) secreted by a deep-sea hydrothermal bacterium displays an interesting glycosaminoglycan-like feature resembling hyaluronan. Previous studies demonstrated its effectiveness to enhance in vivo bone regeneration and to support osteoblastic cell metabolism in culture. Thus, in order to assess the usefulness of this high-molecular weight polymer in tissue engineering and tissue repair, in vitro reconstructed connective tissues containing HE800 EPS were performed. We showed that this polysaccharide promotes both collagen structuring and extracellular matrix settle by dermal fibroblasts. Furthermore, from the native HE800...
Tipo: Text
Palavras-chave: Marine hydrothermal bacteria; Glycosaminoglycan-mimetic; Collagen; Matrix metalloproteinases; Dermal fibroblast; Polysaccharides; Tissue engineering.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00138/24973/23072.pdf

Production and Quality Control of Carrier-based Legume Inoculants
Provedor de dados: 30
Autores: J.A.
Palavras-chave: Products; Rhizobium; Root nodulation; Yeasts; Legumes; Application methods; Polysaccharides; Quality controls; Yeast extracts; Nitrogen fixation.
Ano: 1984
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3999

Rhizobium Germplasm Resources at ICRISAT Center
Provedor de dados: 30
Autores: O.P.(Affl: ICRISAT, Patancheru 502 324, Andhra Pradesh, India. ).
Palavras-chave: Genetic soil types; Rhizobium; Pigeonpeas; Root nodulation; Germplasm; Chickpeas; Purity; Polysaccharides; Legumes; Altitude.
Ano: 1991
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4107

A method for germinating perennial Cicer species
Provedor de dados: 30
Autores: Coyne, C.J.
Palavras-chave: Polysaccharides; Chickpeas; Grafting; Pigeonpeas; Germplasm; Relative humidity; Transplanting; Regeneration; Tillage equipment; Developmental stages.
Ano: 2005
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3229

Smut Disease of Pearl Millet
Provedor de dados: 30
Autores: R.P.
Palavras-chave: Millets; Chemical control; Polysaccharides; Breeds (animals); Inbred lines; Hybrids; Disease resistance; Diseases; Grain; Fungicides.
Ano: 1988
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4104

Evaluation of sorghum germplasm for resistance to insect pests
Provedor de dados: 30
Autores: H.C.
Palavras-chave: Biological interaction; Sorghum; Genotypes; Germplasm; Animal developmental stages; Grain; Diapause; Sowing date; Eggs; Polysaccharides.
Ano: 2003
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4232

Colleters in Chamaecrista (L.) Moench sect. Chamaecrista and sect. Caliciopsis (Leguminosae-Caesalpinioideae): anatomy and taxonomic implications
Provedor de dados: 39
Autores: Silva,Marinalva dos Santos; Coutinho,Ítalo Antônio Cotta; Araújo,Maicon Nascimento; Meira,Renata Maria Strozi Alves.
ABSTRACT The genus Chamaecrista contains ca. 330 species organized into six sections, of which section Chamaecrista is the second largest (ca.75 species) distributed among six series, while the section Caliciopsis contains only two species. Colleters have been described in the genus Chamaecrista and they show potential taxonomic and phylogenetic significance. They are associated with lubrication, desiccation prevention and protection from microbial attacks of young developing organs. Although six types of colleters have been described for the genus Chamaecrista, there have been no studies focusing on the diversity of colleters in the sections Chamaecrista and Caliciopsis. Samples from developing leaves and flowers of both sections were obtained from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colleter; Flower; Histochemical analysis; Leaf; Polysaccharides; Secretory structures; Taxonomy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300382

Characterization and biological properties of sulfated polysaccharides of Corallina officinalis and Pterocladia capillacea
Provedor de dados: 39
Autores: Ismail,Mona Mohamed; Amer,Mohamed Saleh.
ABSTRACT Red seaweed possess various sulfated polysaccharides (SPs) that could potentially be exploited as bioactive agents for medical and industrial applications. Crude polysaccharides from the red algae Corallina officinalis (SP1) and Pterocladia capillacea (SP2) were extracted and characterized according to their chemical content and their antioxidant, anti-inflammatory, anticoagulant, antibacterial, antifungal, and antifouling activities. The isolated polysaccharides contained low levels of protein and high levels of carbohydrate and sulfate. The extracted SPs were characterized by Fourier-transform infrared (FTIR) and nuclear magnetic resonance (NMR) spectral data and revealed that SP1 is composed of carrageenan, while SP2 is composed of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anticoagulant; Antifouling; Antimicrobial; Antioxidant; Polysaccharides; Red seaweed.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000400623

Comparative anatomy of calyx and foliar glands of Banisteriopsis C. B. Rob. (Malpighiaceae)
Provedor de dados: 39
Autores: Araújo,Josiane Silva; Meira,Renata Maria Strozi Alves.
Banisteriopsis is considered one of the largest genera of Malpighiaceae with 58 species, of which 47 occur in Brazil. The typical calyx and leaf glands of Banisteriopsis are considered relevant to the adaptive success of Malpighiaceae. Comparative studies of anatomical and histochemical characteristics may reveal similarities and assist in the interpretation of the functions performed by such glands. The present study aimed to describe the anatomy of the calyx and leaf glands of 38 species ofBanisteriopsis that occur in Brazil, and to analyze these structures histochemically in B. campestris, B. laevifolia and B malifolia, using standard methods. Calyx glands differ from leaf glands by possessing an irregular surface that is covered by a thick cuticle that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Banisteriopsis; Calyx glands; Histochemistry; Leaf glands; Lipids; Micromorphology; Polysaccharides; Protein.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000100112

A polysaccharide fraction extracted from Pleurotus ostreatus mycelial biomass inhibit Sarcoma 180 tumor
Provedor de dados: 42
Autores: WISBECK,ELISABETH; FACCHINI,JEAN M.; ALVES,ENDI P.; SILVEIRA,MARCIA L.L.; GERN,REGINA M.M.; NINOW,JORGE L.; FURLAN,SANDRA A.
ABSTRACT Fungi of Pleurotus genus have attracted a great interest due to their medicinal properties such as anti-inflammatory, antimicrobial and antitumor. These properties are attributed mainly to polysaccharides synthesized by Pleurotus. This work aimed to study the mycelial growth of P. ostreatus in submerged culture, evaluating the influence of the initial concentration of substrate (20 and 40 g/L of glucose) and the pH (4 and 6) on kinetic parameters of production of biomass. The effectiveness of different doses (10, 30 and 50 mg/kg) of a mycelium polysaccharide fraction extracted from P. ostreatus in reducing Sarcoma 180 development in mice was also verified. In the range of this study, maximum concentration of mycelial biomass (about 12.8 g/L) was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antitumor Activity; Mycelium; Pleurotus ostreatus; Polysaccharides; Sarcoma 180.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502013

Effects of different extracts of the mushroom Agaricus blazei Murill on the hematologic profile of mice with Ehrlich tumor
Provedor de dados: 45
Autores: Verçosa Júnior,D.; Ferraz,V.P.; Duarte,E.R.; Oliveira,N.J. F.; Soto-Blanco,B.; Cassali,G.D.; Melo,M.M.
The aim of this study was to investigate the effect of the mushroom Agaricus blazeii Murril (ABM) extracts on the hematological profile of Swiss mice bearing an Ehrlich solid tumor. Three fractions (total extract, polysaccharides, and supernatant) of ABM extracts obtained by four methods (ultrasonic or water bath, at pH 4 or pH 7) were administered to mice over 21 days. Polysaccharide solutions were analyzed by gas and liquid chromatography that showed both mannose and glucose concentrations. The method of extraction influenced the degree of glucose polymerization and the mannose/glucose relationship. The treatment with ABM supernatant at pH 7 and water bath was associated with reduced concentrations of leukocytes and lymphocytes and altered the percentage...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mouse; Ehrlich solid tumor; Polysaccharides; Hematological profile.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352015000300679

A Rapid and Efficient Method for Purifying High Quality Total RNA from Peaches (Prunus persica) for Functional Genomics Analyses
Provedor de dados: 48
Autores: MEISEL,LEE; FONSECA,BEATRIZ; GONZÁLEZ,SUSANA; BAEZA-YATES,RICARDO; CAMBIAZO,VERONICA; CAMPOS,REINALDO; GONZALEZ,MAURICIO; ORELLANA,ARIEL; RETAMALES,JULIO; SILVA,HERMAN.
Prunus persica has been proposed as a genomic model for deciduous trees and the Rosaceae family. Optimized protocols for RNA isolation are necessary to further advance studies in this model species such that functional genomics analyses may be performed. Here we present an optimized protocol to rapidly and efficiently purify high quality total RNA from peach fruits (Prunus persica). Isolating high-quality RNA from fruit tissue is often difficult due to large quantities of polysaccharides and polyphenolic compounds that accumulate in this tissue and co-purify with the RNA. Here we demonstrate that a modified version of the method used to isolate RNA from pine trees and the woody plant Cinnamomun tenuipilum is ideal for isolating high quality RNA from the...
Tipo: Journal article
Palavras-chave: CDNA library; Fruit; Fruit trees; Functional genomics; Peach; Polysaccharides; Prunus persica; RNA isolation; Rosaceae; RT-PCR.
Ano: 2005
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602005000100010

Enhancement of cellular activity in hyperglycemic mice dermal wounds dressed with chitosan-alginate membranes
Provedor de dados: 56
Autores: Breder,J.S.C.; Pires,A.L.R.; Azevedo,F.F.; Apolinário,P.P.; Cantaruti,T.; Jiwani,S.I.; Moraes,Â.M.; Consonni,S.R.; Araújo,E.P.; Adams,G.G.; Saad,M.J.A.; Lima,M.H.M.
The use of specially designed wound dressings could be an important alternative to facilitate the healing process of wounds in the hyperglycemic state. Biocompatible dressings combining chitosan and alginate can speed up wound healing by modulating the inflammatory phase, stimulating fibroblast proliferation, and aiding in remodeling phases. However, this biomaterial has not yet been explored in chronic and acute lesions of diabetic patients. The aim of this study was to evaluate the effect of topical treatment with a chitosan-alginate membrane on acute skin wounds of hyperglycemic mice. Diabetes mellitus was induced by streptozotocin (60 mg · kg-1 · day-1 for 5 days, intraperitoneally) and the cutaneous wound was performed by removing the epidermis using...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: C57BL/6J mice; Wound healing; Wound dressing; Polysaccharides; Diabetes.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2020000100602

Glycoconjugates and polysaccharides of fungal cell wall and activation of immune system
Provedor de dados: 58
Autores: Pinto,M.R.; Barreto-Bergter,E.; Taborda,C.P.
The fate of organochlorine 14C-dicofol in activated sludge process was investigated. Results showed that the major part of radioactivity remained adsorbed on biological sludge. Consequently, its final disposal deserves special attention. The small amounts of dicofol, biotransformed or not, which remained in the treated effluent could contaminate receiving bodies.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycoproteins; Polysaccharides; Glycosphingolipids; Immune system; Fungi.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000200001

Extraction of Soluble Polysaccharides from Grape Skins
Provedor de dados: 118
Autores: Gil Cortiella,Mariona; Peña-Neira,Álvaro.
Obtaining polysaccharides from grape cell walls is an interesting topic for the wine industry given its implications with regards to wine treatments and potential sensory attributes. In the present work, several conditions (i.e., a chelating agent, pH, titratable acidity, extraction time, number of successive extractions, solid to liquid ratio and alcoholic fermentation) were tested to assess their effects on the yield of soluble polysaccharides obtained from grape skins. Among the four tested solvents (i.e., water, tartaric acid, ammonium oxalate, and ethylenediaminetetraacetic acid), aqueous ammonium oxalate was the most effective for polysaccharide extraction but also produced the highest amount of protein impurities. Increasing the number of successive...
Tipo: Journal article
Palavras-chave: Carménère; Extraction; Grape skin polysaccharides; Pectin; Polysaccharides; Wine.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000100009

Anatomical and histochemical aspects of zigotic embryo and leaves in 'Coqueiro Anão'
Provedor de dados: 65
Autores: Santana,Marlucia Cruz de; Souza,Margarete Magalhães; Pereira,Telma Nair Santana; Teixeira,Sílvio Lopes.
The paper provides information about histochemical staining reactions in leaves and embryos of 'Coqueiro Anão' (Cocos nucifera). It was compared in vitro coconut and autotrophic palm leaves. Reactions for insoluble polysaccharides and acidic compounds, protein, extractable lipids, lignin and other classes of compounds were tested using histochemical tests. None sample gave positive reaction for lignin and phenolic compounds. All the samples gave positive reaction for protein, starch and insoluble polysaccharides while acidic compounds were positive only in in vitro leaves. Both in vitro and autotrophic leaves gave positive reaction for lipids showing presence of cuticle even in in vitro leaves. Only autotrophic palm leaves showed idioblasts containing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cocos nucifera; In vitro culture; Polysaccharides; Protein; Lipids.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000400019